The VSMONOCOLOR variable stores the monochrome tint of faces in the visual style for the current viewport. TrueColor value is set as follows: "RGB:XXX,XXX,XXX", where XXX is the color component value in the range 0 to 255.
Note: An existing visual style is not changed when the system variable gets a new value. Temporary visual style will be created as a clone of visual style assigned for current viewport.